MCSA Air supply unit

Marine Application - Accessories 

The air supply unit is a single duct unit and designed for ceiling mounting 

above the false ceiling. The air supply unit is intended for climate control in 

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The MCSA unit consists of an internally insulated casing with a throttling 

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The MCSA units should be used together with a CTGA or a CTLM supply air 

diffuser. 

TECHNICAL DATA 

MCSA Air supply unit 

for the REGOVENT single duct system 

Product facts 

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Is available with electrical re-heater. 

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and commissioning. 

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B15. 

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Norske Veritas. 

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Fläkt Woods EN 2010.08 103 

All rights reserved. 

Accessories

Accessories 



All MCSA units 

The MCSA unit is designed for ceiling mounting and 

consists of an internally insulated casing with a throttling 

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The MCSA units should be used together with a 

CTGA or a CTLM supply air diffuser. 

The supply air diffusers are available with or without 

knob. Supply air diffusers with knob should be used together 

with units with manual control. Supply air diffusers 

without knob should be used with units for constant 

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actuator. 

All supply air diffusers have a bayonet mounting for 

fast and secure connection to the outlet of the unit. 

The pattern of diffusion of the supply air can be ad- 

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directions of discharge. 

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by means of a CTGZ-01 cover strip for blanking off part 

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edge-sealing gasket for blanking off the gap between the 

diffuser and the surface of the ceiling. The CTGA is delivered 

without cover strip or edge sealing gasket. 

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CTLM is delivered without cover plates. 

Supply air temperature at the unit outlet 

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��lowed 

in versions with electrical re-heater 

Output kW �� 

0,3 

0,6 

0,9 

1,2 

1,5 

20 

25 

25 

30 

35 


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manual control 



CTLM 

MCSA 

CTGA 

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CTGA 

CTLM



Air supply unit with manual control 

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of a knob in the diffuser. 

Supply air 

Knob for airflow 

adjustment 

Air supply unit designed for manual control 

with an electric re-heater 

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of a knob in the diffuser. 

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available on request. 

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when the heater has cooled down. 

Supply air 

Knob for airflow 

adjustment 

Supply 

air diffuser 

Electric 

reheater 

Supply 

air diffuser 

Air supply unit designed for automatic 

control with an electric actuator 


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The temperature in the cabin is controlled via a 

thermostat (not included in the MCSA) by changing the 

supply air via the electrical actuator 

Air supply unit designed for automatic 

control with an electric actuator and an 

electric re-heater 

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The temperature in the cabin is controlled via a 

thermostat (not included in the MCSA) by changing the 

supply air via the electrical actuator and the output of the 

electrical re-heater. 

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available on request. 

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when the heater has cooled down. 

Controller 

(not included 

in the MCSA) 

Supply air 

Cabin thermostat 

(not included in the MCSA) 

Supply air 

Cabin thermostat 

(not included in the MCSA) 

Actuator 

CTGA or CTLM 

air diffuser 



Ceiling 

Actuator 

Electric 

reheater 

CTGA or CTLM 

air diffuser 

Ceiling 

Accessories

Accessories 



Charts 

The charts are applicable under the following conditions: 

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in a room with an equivalent sound absorption area of 10 

m � . 

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MCSA size 2, without electrical re-heater, 

with supply air diffuser CTGA or CTLM 

Total pressure drop, Pa 

0,6 1,0 2,0 

1000 

500 

400 

300 

200 

Zone length, m 

150 

30 35 

20 30 

Airflow, l/s 

40 50 60 70 80 

MCSA size 3, without electrical re-heater, 

with supply air diffuser CTGA or CTLM 


40 

45 

Sound level, 

dB(A) 

0,6 

1000 


1,0 2,0 

500 

400 

300 

200 

150 

25 30 35 

25 30 40 50 60 70 80 90 100 


40 

45 

Sound level, 

dB(A) 

Zone length 

MCSA size 2, with electrical re-heater 

and supply air diffuser CTGA or CTLM 

MCSA size 3, with electrical re-heater 

and supply air diffuser CTGA or CTLM 


Zone length is the distance between the air supply unit 

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units. 

All particulars are applicable to a unit with four-way 

diffusion. 

0,6 1,0 2,0 

1000 

150 

30 35 

20 30 


40 50 60 70 80 





500 

400 

300 

200 


40 

45 

0,6 

1000 


1,0 2,0 

500 

400 

300 

Sound level, 

dB(A) 

200 

40 

150 

30 35 

25 30 40 50 60 70 80 90 100 


45 

50 

Sound level, 

dB(A)



Sound power level 

The sound power level L w in dB can be calculated by 

adding the correction value K oct to the value of L A obtained 

from the charts on previous page in ac cord ance 

with the following formula: 

L w = L A + K oct 

K oct is a mean value for the entire normal operating range. 

Size Correction values K oct , dB 

Electrical Octave band, mid-frequency, Hz 

re-heater 63 125 250 500 1000 2000 4000 8000 

2 without 6 14 8 2 -6 -10 -16 -22 

3 without 5 12 6 1 -1 -8 -16 -22 

2 with 4 11 7 2 -4 -11 -17 -23 

3 with 3 9 6 2 -2 -10 -17 -23 

Sound attenuation 

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sound power level between the duct and the room. 

Size Sound attenuation, dB 

Octave band, mid-frequency, Hz 

63 125 250 500 1000 2000 4000 8000 

2 22 19 19 20 26 25 21 23 

3 20 17 18 19 24 23 19 21 

Wiring diagram 

MCSA-a-1-0-dd-2-1 (dd should not be 0) 

Air supply unit designed for manual control with an electric 

re-heater 

Air supply unit MCSA 

1 

2 

3 

1. Electrical re-heater element 

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�� Not included in the MCSA unit. 

L 

0 

4 

5 

L 

0 

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MCSA-a-2-0-00-0-1 

Air supply unit designed for automatic control with an 

electric motor-driven actuator for three-position control. 

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connected to the plug connector supplied. The plug connector 

is located at the inlet end wall of the unit. 

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BK (Black) 

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MCSA-a-2-0-dd-2-1 (dd should not be 0) 

Air supply unit designed for automatic control with an 

electric actuator and an electric re-heater. 

See wiring diagram and function above. 

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Control mechanism�� 

Insulation��- 

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Electric re-heater element: Stainless steel. 

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Knob: Grey ABS plastic 

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Packaging 

BU (Blue) 

BR (Brown) 


BK (Black) 

BU (Blue) 

BR (Brown) 

��board 

packaging. 

The CTGA and CTLM are delivered in cartons. 



Y1 

G 

Y2 

Y1 

G 

Y2 

24 V (SELV) 

24 V (SELV) 

Accessories

Accessories 



Dimensions and weights 

All dimensions in mm. 

D dia 

40 

32 

B 

Installation in the space above the false 

ceiling 

255 

Dia. of hole 

in the ceiling 

+5 

–0 

View A 

CTLM 

70 

Ceiling 

50-75 

F 

250 dia 

Self-tapping 

screws 

II 

II 

Not included in 

the MCSA unit 

CTGA 

70 

Ceiling 

230 VAC connection 

(only versions with 

electric re-heater) 

50-75 

10 

Weight, kg 

a = Versions without actuator and re-heater 

b = Versions with actuator 

c = Versions with re-heater 

d = Versions with actuator and re-heater 

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340 square 

CTLM air diffuser 

352 square 

Knob for manual 

controlled air flow only 


Size A B C D E F 

2 425 425 180 99,3 132 158 

3 495 495 180 124,3 169 220 

Size a b c d CTGA CTLM 

2 6,5 7,2 7,5 8,2 1,3 1,6 

3 8,5 9,2 9,5 10,2 1,3 1,6 



A 

E 

Min 50 

24 VAC Plug contact 

(only versions with 

electric actuator) 

25 

84 

4 

C 

Max 75



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Size (a) 

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1 = manual with knob 

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Suspension (c) 

0 = without 

1 = with U-brackets (as shock proof) 

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as accessory 

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00 = without heating coil 

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Current (e) 

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1 = standard 

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Accessories (aa) 

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the above are accessories for separate delivery 

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MCSZ-aa 


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(to be ordered separately) CTLM-2-b-1 

Version (b) 

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pneumatic motor 

Accessories for the CTGA 

Cover strip set, 5 × 2 m CTGZ-01 

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Accessories for the CTLM 

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Accessories

Accessories 




All rights reserved.

MCSA Air supply unit

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